Concrete railroad cross-tie.



I B. J. ROSENGRANS & H. SANDBRSON.

CONCRETE RAILROAD CROSS TIE.

APPLICATION TILED 001214, 1912.

1,054,365. Patented Feb.25, 1913.

W 33% mm? THEIR ATTORNEY UNITED STATES PATEN OFFICE.

ERNEST J'. ROSENCRANS AND HENRY SANDERSON, OF SAN JOSE, CALIFORNIA, ASSIGN- ORS OF ONE-FIFTH TO FRANCIS C. BATES. OF SAN JOSE, CALIFORNIA.

CONCRETE RAILROAD CROSS-TIE.

Specification of Letters Patent.

Application filed October 14, 1912. Serial No. 725,677.

To all whom, it may concern Be it known that we, Ei'mns'r J. ROSEN- t'naxs. a citizen of the United States, residing at San Jose. in the county of Santa .is a specification.

Our invention relates to h'nprovement in concrete railroad cross-ties, and especially to means for prevention of friction between the rail and the concrete cross-tie, and means for prevention of the upward strain in the center of said tie, which in a short time, without prevention, will cause said tie to crack and crumble at the center point and become useless. Also, in the construction of a concrete cross-tic it becomes necessary to have the rail-engaging bolts pass through the concrete crosstie perpemlicularly, and fitted so the same can be removed in case of breakage, with heads on the lower ends of said bolts which are drawn up against the under side of said concrete tie by the fastening of the rail to said tie by said bolts; and by the constant pounding on the rail plates incident to the passage of trains and other railway rolling stock over the tracks will. without prevention. cause the heads of these bolts to wear upward into the concrete tie, and the side motion of said bolts will cause them to wear in their passage through the concrete tie, and give an undesirable vibration to the rail. It is also found by experience that the concrete tie, without prevention, will become chipped and broken at its ends, and badly defaced.

It is the main object of this invention to obviate these objectionable features, as well as to increase the eflcctive life of the concrete railroad cross-tie, and to increase its durability and etl'iciency.

Further objects and. advantages will appear in the following description.

Our invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompany ing drawings, in which-- Figure 1 is a perspective view, showing the accompanying parts in position. Fig. 2

is a fragmentary, longitudinal, vertical section through the tie and rail. vertical cross-section on line A-A of Fig. 2. Fig. 4 is a perspective view of the component'parts of the upper anti-friction pads and plates. Fig. 5 is a perspective view of the component parts of the under anti-friction pads and plates. Fig. 6 is a side elevation of the split and threaded key in position.

Similar numerals refer to similar parts throughout the several'views.

In the drawings here presented, we have shown the invention as applied to a concrete tie l, of suitable dimensions, which may be constructed of any well-known material and suitably reinforced by rods, as 2.

3 is transverse curvilinear channelapproximately in the center of the under surface of said tie, and extending a distance each way from the center of said tie to the ground hearings thereof, shown at G, said channel being of the required depth at the center of said tie upward, to prevent any ground strain coming on the center of said tie the downward pressure on the end bearings, G, of said tie by the passage of trains and other railway rolling stock; the ground bearings, shown at G, extend inward a distance from each end of said tieto the transverse curvilinear channel slrown at 3'. Two of the reinforcing rods shown at 2, Fig. 1, extend out a distance from each end of said tie, and have slots out near the ends thereof "for the purpose of fastening protection plates 4, by taper keys 5, to the ends of said tie for the purpose of protecting the ends thereof from being chipped and broken; said plate 4 is made of meta of the proper thickness, having a flange, shown at 6, turned at right angles thereon to fit the end of said tie, for further protection to the end of said tie; this metallic plate 4, not only protects the end of said concrete tie, but gives it strength and durability. Key 5 is made of steel of the proper length, width, and thickness, tapering to its lower end where the same is made round, as shown at 5", having a thread cut on the round part thereof to receive a threaded nut, shown at 7 the threaded end, 5, is then split as shown at 8, Fig. 6. When this key 5 is placed in slot 9, washer 10 is placed on over the threaded part 5 thereof, wvhen the threaded nut 7 is turned on, and by this nut Patented Feb. 25, 1913.

Fig. 3 is a.

anti-frietion pad 1i- When m pim-e; i'rlci'ion phii'e 16, ref. s on tsp of the he 5 is drawn into niece i'hreu i u l l H 9; the split 8 is then opened a cl si e prevent he nut 7 from turning back:

loosening Key 5.

In the Lop slde of he 1, (hr-eeiiy gander the mi] 11 is cast :1 rec for, the? 1 pose of piarn' g {hex-em fil'liblillCilOn p; i said zu'iii-iriction pad 33 (parts shin," l3 'imrl 15 Fig" i) is cempnsed three liyers of asbestos or (my ether minus and incombustible material, preferably and inlaid between the Myers of the mail rial are steei wires 14. foiii'he pm'ymse i infoi'cing, strengthening and keeping: the.

place; this anti-friction pm}, when made mm Fig};

over the top of ihe three layers. imvin jj its ends bent down and inward, a mine, is for the purpose of holding the 1; veins in? said anti-friction 'pflfi 13 whether 5 'ter said layers have been com 'esseci togei hmx with i a thin metaiiic piste l5, simwn i the steel Wire reinforcing wires 14; therein,

1 plate 1. and ant-i- Ii\3i11(71', :id 153, del' the rail 11. and is for the purl)" receiving the friction of mii 1.1., der side of tie 1, is set :1 recess 1.7, shown in Figs. 2 and 3, for the purpose of pine 3 therein anti-friction pad 18, ans iron pixie 19; this iron plate 19, and smtiqfriciieh pad 18, have two hoies bored through thei flat surfaces that correspond 'wiih the i m cast in tie 1, and shown 21( 20, i0 receive ass up and 'thi'eesgh antimd ihimigh friction plate ish- :22: these hoits,

I w, s v m my he s e. ihese to 10w cembus said. belts,

= wipiie-n it can be fed to concrete on 1' inveiiiien,

. commie i'siiz'mzd cross-tie reinmi in any suitable mennei, hi. 11g aniipads rei *ed with --"-i Wires ailic whites. and having; castiep side :11 said lie toceive saiii :ieiiien pads and rec V .3 east in the UlMiGl' side of said is $10 receiv saidanti friction 'pads, in. cmnhineiion with friction piaies on the ouisii'ie lie ssifi anti -fricti0n. pads i0 receive the friei'ien of ihe rails as shmvn and (icsmniheci.

2.111 a commie railroad crossiie, the eomhi'i'mi'iim T I V hming its iewel end irmmcieri flfit l i0 3K iYf: {L threaded uni; ien hei :g

ii itnesses Join: A I

i Btemeim.

'm and desire in secure hy Lei- 

